【正文】 bed subsidence time curve strikingly different. Loading rate on the initial settlement, and have an obvious effect on little influence on later settlement. The filling velocity too fast, the soil is not fully consolidation, can cause larger postconstruction settlement. 4 summary and Suggestions (1) used in the engineering project of soft soil subgrade settlement calculation method contains many simplified assumption, and the actual condition is not fully ply with. Further research new putational theory and calculation method, as considering the influence of many factors, and do it is simple, intuitive, and convenient engineering design researchers used. (2) soil mechanics problem analysis and calculation, remains a half experience stage, half theory parameters calculation method for the selection of more important than possible. Suggestions for extensive testing research, indepth understanding of regional soft soil basic characteristics. (3) due to the design of highway subgrade with deformation control is given priority to, general thanked the amount of settlement after demanding. So it is necessary to establish highway experts design system, guidance information construction, effectively control postconstruction settlement quantity. 。t get universal application, can only be used for important engineering, important section of embankment settlement calculation. In addition, the finite element it is hard to consider large deformation consolidation problem is the geometrical nonlinearity, often making the calculation results deviation is bigger. curvefitting method Based on the scene early measured settlement material, use curvefitting method which can predict the development regularity, settlement of calculates final subsidence and then define paving roadways time. Curvefitting method, a index curve GaoMuJun hyperbola method, the method of interface or have countries GaoMuJun corvee 1975 proposed dielectric improvement method, etc. Highway soft soil subgrade settlement over time with the relationship is generally hyperbola form diagram. But also somebody thinks hyperbolic equation itself did not reflect the consolidation of foundation soil, and subsidence rate speed with lack of the intrinsic relation and exponential curve method more appropriate fitting. Slaughter Mang think these methods are gold of the whole process of the settlement and to reflect the relationship, suggest using time prediction settlement curve poisson, but also is only applicable to the level 1 linear loading conditions. inversion analysis Inversion analysis is developed nearly ten years, a new technology, it through the existing settlement observation data, the analysis of the inversion get are losing people parameters, make some positive results and the measured settlement fully close. If can pass through inversion analysis to identify in situ consolidation coefficient, again according to the 1d consolidation theory 39。建議進(jìn)行廣泛的試驗(yàn)研究，深入了解各地區(qū)軟土的基本特性。側(cè)向變形的大小與土的性質(zhì)、軟土層的位置、 路堤的高度等因素有關(guān)。 3 影響軟土路基沉降計(jì)算的一些主要因素 影響軟土路基沉降計(jì)算的因素很多，本文著重鄭澄鋒，等 :軟土路基沉降計(jì)算問(wèn)題探討討論以下幾個(gè)方面 : 土體自重應(yīng)力的計(jì)算 軟土地基中的地下水位通常很高，對(duì)于地下水位以下的土體，當(dāng)其液性指數(shù)為 0IL1時(shí)，土顆粒是否受到水的浮力作用，浮力多大，尚無(wú)法確定，從而影響到此種情況下的土中應(yīng)力計(jì)算?？紤]到土的非線性，輸出層取為荷載增量下的沉降增量 。Terzaghi 的一維固結(jié)理論推算最終沉降量及沉降發(fā)展過(guò)程 。此外，有限元目前很難考慮大變形固結(jié)問(wèn)題即幾何非線性，往往使計(jì)算結(jié)果偏離較大。加荷初始，孔隙水一時(shí)來(lái)不及排出，孔隙水壓力上升，這就相當(dāng)于固結(jié)不排水過(guò)程，體積不變。計(jì)算分層沉降時(shí)考慮不排水沉降 Sa、主固結(jié)沉降 S,和次固結(jié)沉降 S，三部分沉降。通常認(rèn)為沉降是由瞬時(shí)沉降、主固結(jié)沉降與次固結(jié)沉降三部分組成。 XX 學(xué)院 本科 畢業(yè)論文外文資料翻譯 系 別 ： 工程技術(shù)系 專(zhuān) 業(yè)： 土木工程 姓 名： XX 學(xué) 號(hào)： XX 2021年 4 月 10 日 外文資料翻譯譯文 軟土路基沉降計(jì)算問(wèn)題探討 摘要 :在軟土地區(qū)修筑高速公路，最重要的是控制路基沉降。 2 軟土路基的沉降計(jì)算 沉降的組成 在軟土地區(qū)修筑高速公路，必然導(dǎo)致路基的下沉。 常規(guī)計(jì)算方法 這是工程中最為常用的計(jì)算方法，按分層總和法計(jì)算最終沉降，采用一維固結(jié)理論計(jì)算沉降速率。軟豁土受荷載作用后，往往有兩個(gè)過(guò)程 :首先是形變，然后是體變。有限元確實(shí)是一種較為完善的方法，但是由于其計(jì)算參數(shù)多，且需通過(guò)三軸試驗(yàn)確定，程